without knowing the expected result I cannot really see where the problem is. Can you post a screenshot how you see it in QuarkXPress and how you see it in the PDF please? And if you could circle the problematic areas that would make it easier to see the issues.

I am on 11.0.1
May be its more seldom than in the version before, but it is still and I was doing a verification of this bug:

1. I quit Xpress
2. I run the Xpress Cache Cleaner

I export this 240 pages catalog in one PDF and every page is wonderfully, its like christmas
I did a second export without restarting Xpress, after about 150 pages some pictures are starting not clipped out.

3. I quit Xpress
4. I run the Xpress Cache Cleaner
I export 240 pages in one PDF and every page is wonderfull again.
Without restart Xpress I did a second export, needed about 150 pages, some pictures are starting not clipped out.